removed last_visit from the Session class
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index a92db0e..2cdd50c 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -69,8 +69,8 @@
 		 * is set in the config file.  If the developer

 		 * is doing any sort of time localization they

 		 * might want to set the session time to GMT so

-		 * they can offset the "last_activity" and

-		 * "last_visit" times based on each user's locale.

+		 * they can offset the "last_activity" time

+		 * based on each user's locale.

 		 *

 		 */

 

@@ -326,7 +326,6 @@
 		}

 			

 		// Write the cookie

-		$this->userdata['last_visit'] = 0;

 		$this->sess_write();

 	}

 	

@@ -340,11 +339,6 @@
 	 */

 	function sess_update()

 	{	

-		if (($this->userdata['last_activity'] + $this->sess_length) < $this->now)

-		{

-			$this->userdata['last_visit'] = $this->userdata['last_activity'];

-		}

-

 		// Save the old session id so we know which record to 

 		// update in the database if we need it

 		$old_sessid = $this->userdata['session_id'];